Accessing the line port using SSH only.
The advantage to this option is that you need only allow TCP 22 (SSH) through your firewall.
From a *nix platform, you use the following command line:
ssh gf:39@10.216.4.10
When using putty in interactive mode, at the username prompt just put username:number at the prompt.
Putty Profile
If you configure putty profiles (which I use to run putty from the command line).
Connecting from the IOS prompt on your terminal server
Accessing a port on your terminal server using the IOS command line, where 40 is the line number of the serial port that you want connect to.
lontrm01#ssh -l gf:40 10.216.4.10
{Thanks to Emanuele who posted a comment on the original post}
HELP: How do you enter Break Characters to enter ROMMON ?
I have not been able to successfully enter a break character / sequence to break into the boot sequence when using Reverse SSH. From my research, it seems that the break characters when using SSH are different from those using telnet.
I am sure that there is an answer – please leave a comment if you have any tips.
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About Greg Ferro
Hi Greg,
I think there is no standard key. On openssh using ~B you ask to remote server to send a BREAK to remote server. But I’m not sure SSHv2 on cisco implement this. I’ve nothing connected to the only reverse SSH box I have, so I can’t test..
And I see no telnet break-on-ip or ip-on-break for ssh.. :-/
I tried ~B on OSX Terminal but it didn’t work. I also activated the ‘telnet -on-break’ but it didn’t work either. The only way I got it to work was to remove the line from the rotary group, telnet (not SSH) as normal, connect a windows keyboard, and open a windows terminal emulator in Parallels. Which isn’t really very good.
You could try configuring the ip ssh break command.
http://www9.cisco.com/en/US/docs/ios/security/command/reference/sec_i3.html#wp1056802
Sorry I meant to type “ip ssh break-string” command in the previous post